This is the one I use, I've tried different brands before and this is by far the strongest one: http://www.amazon.com/Conair-Boar-Bristle-Wood-Brush/dp/B00KOC9OXS/ref=sr_1_29_a_it?srs=2529187011&ie=UTF8&qid=1452843606&sr=8-29&keywords=boar+brush